Caption: Woodmouse (Apodemus sylvaticus). Also known as the long tailed field mouse, this nocturnal mouse is found throughout Europe and is Britain's most common rodent. It lives in many habitats, including woodland and farmland, and feeds off invertebrates, berries, seeds and nuts. Woodmice are an important source of food for birds of prey, with the breeding success of owls often corresponding to the fluctuating population of woodmice. Woodmice produce complicated borrows and live communally off stored food in the winter.